Knuckle-joint connection.



M, KELLY.

KNUCKLE JOINT CONNECTION. APPLIGATION FILED 33,118, 1908. gzzmwm MAR. 23, 1909.

927 97$n Patented; July 13, 1909. 5 ng U yd j j 7 a I in n'rrn MICHAEL KELLY, ()l BLUUMlNtlTUN, lLLlNOIS KNUCKLE-JOINT CONNIE OTIQN.

no. camera.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed February 18, 1908, Serial No. 416,471. Renewed March 23, 1909. Serial No. 485,236.

To all whom it may concern:

Be it known that 1 Mronann KELLY, a citizen of the=United States, and a resident of Bloomington, in the county of McLean and State of Illinois, have invented a new and Improved Knuckle Joint Connection, of which the following'is a full, clear, and-e act description.

The invention relates to the pivotal connection between the connecting rod and the parallel rod of alocomotive, and its object is to provide a new and improved knuckle joint connection, arranged to hold the pivot pin tight and to properly press the jaws, to prevent lost motion and uneven wear;

The invention consists of novel features -and parts and combinations of the same,

which will be more fully described hereinafter and then pointed out inthe claims. A practical embmliment o't'lhe invention is represented in the accompanying drawings forming a part of this s wcitication, in which similar characters of reference indicate corresponding parts in all the views.

Figure t is a side elevation of the improvement as applied; Fig.2 is an enlarged sectional plan v ew of the improvement on the line 22 of Fig. 3; Fig. 3 1s a face view of the improvement; F 4 is an enlarged transverse section of the same onthe line l4t of Fig. 3; Fig, 5 is a side elevation of the improvement as applied to the strap of a connecting rod; and Fi 6 is a plan view of the same.

,As shown in Fig. 1, the connecting rod A of the locomotive is provided at its rear end With a fork, having its members A, A? straddling the extension arm liof the parallel rod B, and the said fork members A, A and the extension arm 13 are connected with each other by the usual knuckle or pivot pin (1. The parallel rod B engages the usual wrist pin l) on the driving wheel l) of thelocomotive. The fork members A, A. of the connecting rod A, have extended portions A, A reaching beyond the top and bottom of the extension arm ll of the parallel rod Ii, and in the. said extended portions A of the fork member A screw the-set screws F, abutting with their rear ends against the inner "faces of the extended portions A of the rca r fork member A, as plainly indicated in Fig. "l. The set screws 1 areadapted to be locked in place after prevent uneven wear of the pivot arm 13 and the fork members i the desired adjustment is made, by jam nuts 'Gr screwing on the set screws F against the Now in using this device, the nuts 0 of the knuckle or pivot pin (,1 are screwed up in the usual manner, and tlltlh the set screws 1* are adjusted to spring the extended p0r-. tions A, A of the fork members A, A slightly apart, to insure a proper fit of the arm ll between the fork members A, A without binding, so that a proper connection is had between the extension arm B and the fork members A, A by the pivot pin C, to pin C, the A It is understood that the pivot pin 0 has a slight taper tilting in the forkqnembers A, A, and on tightening the nuts C the middle portion of the rear fork member A is drawn tight against the extension arm B,,

but on adjusting the set screws F, the fork member A" is presscd'in the opposite direc tion, and consequently a proper tit is had between the connected. parts.

As shown in lti and (3, the extended portions A, A for the set screws F are formed integrally on the strap A of the connecting rod, and in this case the action is the same as above described in reference to vFigs. 1 to 4. v

Having thus described my invention, I claim as new and desire to secure by Letters Patent v i 1. A knuckle pin connection for locomotives, provided with a fork, an arm extending into the fork, a. knuckle pin connecting the fork and the arm, and extensions on each arm of the fork above and below the knuckle pin, and n ieans engaging said extensions for forcing them apart.

2. A knuckle pinconnection for locomotives, provided with a fork, an arm extends ing into the fork, a knuckle pin connecting the fork and the arm, and extensions on each exteudil'ig between the arms of the fork, a.

tension, said armsbeing each provided with pivot pin traversing the arms and the ex In testimony whereof I have signed my MICHAEL KELLY.

lugs above and below the said arms, and set I screws threaded through the lugs of one 4 arm, and engaging the lugs of the other arm whereby to spring said arms apart for the purpose set forth.

Witnesses;

C. J. BRENNAN, JOHN J. BRENNAN.

name to this specification in the presence of 

